Troubleshooting - Bryant Base Series Application Manual And Service Manual

Residential Air Conditioners and Heat Pumps Using R-22 and Puron® Refrigerant: Application Guideline and Service Manual
Winding
Start (S-C)
Run (R-C)
Status Codes
Table 18 shows the status codes flashed by the amber status light. Most
system problems can be diagnosed by reading the status code as flashed
by the amber status light on the control board.
The codes are flashed by a series of short and long flashes of the status
light. The short flashes indicate the first digit in the status code,
followed by long flashes indicating the second digit of the error code.
OPERATION
Standby – no call for unit operation
Low Stage Cool/Heat Operation
High Stage Cool/Heat Operation
Brown out protection is Disabled
Brown out protection is Active
* Sequence: Compressor contactor is de-energized and outdoor fan is energized for up to 15 minutes. If demand still exists, control will energize compressor contactor after 15 minute delay. If
fault is cleared, unit will resume operation. If fault still exists, fan shuts off, and error code continues to flash. Control will attempt re-start every 15 minutes. Cycling low voltage defeats the
15 minute delay.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 17 – Two-Stage Compressor Resistances
(Winding Resistance at 70_F±20_)
024
1.64
1.30
Table 18 – TROUBLESHOOTING
AMBER LED
FAULT
FLASH CODE
None On solid, no flash Normal operation
None 1, pause
None 2, pause
None 5, pause
None 6, Pause
System Communications
16
Failure
Invalid Model Plug 25
High Pressure Switch
or Discharge Temp 31*
Switch Open
Low Pressure Switch
32*
Open
Control Fault 45
Brown Out (230 v) 46
No 230v at Unit 47
Outdoor Air Temp
53
Sensor Fault
Outdoor Coil
55
Sensor Fault
Thermistors out of
56
range
Low Stage
71*
Thermal Cutout
High Stage
72*
Thermal Cutout
Contactor Shorted 73
No 230V at
74
Compressor
Low Stage
81
Thermal Lockout
High Stage
82
Thermal Lockout
Low-Pressure Lockout 83
High-Pressure Lockout 84
036
1.52
0.88
The short flash is 0.25 seconds ON and the long flash is 1.0 second ON.
Time between flashes is 0.25 seconds. Time between short flash and
first long flash is 1.0 second. Time between code repeating is 2.5
seconds with LED OFF.
EXAMPLE:
3 short flashes followed by 2 long flashes indicates a 32 code.
shows this to be low pressure switch open.
POSSIBLE CAUSE AND ACTION
Normal operation
Normal operation
User made selection, see instructions for more detail
User made selection, see instructions for more detail
Communication with User Interface lost. Check wiring to User Interface, indoor and
outdoor units
Control does not detect a model plug or detects an invalid model plug. Unit will not
operate without correct model plug.
High-pressure switch trip. Check refrigerant charge, outdoor fan operation and coils for
airflow restrictions.
Low-pressure switch trip. Check refrigerant charge and indoor air flow.
Outdoor unit control board has failed. Control board needs to be replaced.
Line voltage < 187v for at least 4 seconds. Compressor and fan operation not allowed
until voltage>190v. Verify line voltage.
There is no 230v at the contactor when indoor unit is powered and cooling/heating
demand exists. Verify the disconnect is closed and 230v wiring is connected to the unit.
Outdoor air sensor not reading or out of range. Ohm out sensor and check wiring.
Coil sensor not reading or out of range. Ohm out sensor and check wiring.
Improper relationship between coil sensor and outdoor air sensor. Ohm out sensors and
check wiring.
Compressor operation detected then disappears while low stage demand exists.
Possible causes are internal compressor overload trip or start relay and capacitor held
in circuit too long (if installed).
Compressor operation detected then disappears while high stage demand exists.
Possible causes are internal compressor overload trip or start relay and capacitor held
in circuit too long (if installed).
Compressor voltage sensed when no demand for compressor operation exists.
Contactor may be stuck closed or there is a wiring error.
Compressor voltage not sensed when compressor should be starting. Contactor may
be stuck open or there is a wiring error.
Thermal cutout occurs in three consecutive low/high stage cycles. Low stage locked
out for 4 hours or until 24v power recycled.
Thermal cutout occurs in three consecutive high/low stage cycles. High stage locked
out for 4 hours or until 24v power recycled.
Low pressure switch trip has occurred during 3 consecutive cycles. Unit operation
locked out for 4 hours or until 24v power recycled.
High pressure switch trip has occurred during 3 consecutive cycles. Unit operation
locked out for 4 hours or until 24v power recycled.
61
048
1.86
0.52
060
1.63
0.39
Table 18